Frank Warren has moved his big March 16 card to April 20, following the postponement of the Ricky Burns vs Miguel Vazquez main event, George Groves' defection to Matchroom Boxing, Dereck Chisora's standing lack of a British boxing license, and, just in, Nathan Cleverly also being sick.
The card is officially moving because of Miguel Vazquez's reported illness. The fight was expected to be called off because of reported concerns over the fight having yet to actually be contractually finalized, which is still what most believe is the real issue, but Vazquez did have a doctor's note released, and really, you can't ask much more from a promoter than that:
The only remaining fight on the scheduled March 16 date was Nathan Cleverly vs Robin Krasniqi for the WBO light heavyweight title, but Cleverly has a stomach ailment and hasn't trained in the past week or so, which makes it easy to just move the whole thing to April. Chisora not having a license two weeks before his scheduled return didn't help, either. There was just nothing left to sell at Wembley on that date.